255855377533 has 12 divisors (see below), whose sum is σ = 298150788060. Its totient is φ = 218919164352.

The previous prime is 255855377507. The next prime is 255855377549. The reversal of 255855377533 is 335773558552.

It can be written as a sum of positive squares in 2 ways, for example, as 53964219204 + 201891158329 = 232302^2 + 449323^2 .

It is not a de Polignac number, because 255855377533 - 2²⁹ = 255318506621 is a prime.

It is a super-2 number, since 2×255855377533² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255855377563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4560466 + ... + 4616227.

It is an arithmetic number, because the mean of its divisors is an integer number (24845899005).

Almost surely, 2^255855377533 is an apocalyptic number.

It is an amenable number.

255855377533 is a deficient number, since it is larger than the sum of its proper divisors (42295410527).

255855377533 is an equidigital number, since it uses as much as digits as its factorization.

255855377533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9177276 (or 9177269 counting only the distinct ones).

The product of its digits is 66150000, while the sum is 58.

The spelling of 255855377533 in words is "two hundred fifty-five billion, eight hundred fifty-five million, three hundred seventy-seven thousand, five hundred thirty-three".